Experimental facility for proofing conservation of momentum and conservation of kinetic energy for collisions of double simple pendulums

A technology of momentum conservation and experimental equipment, which is applied in the field of verification experiments of physical laws, can solve problems such as difficulties and uneconomical adjustments, and achieve the effects of simple equipment, clear experimental ideas, and low maintenance costs

Inactive Publication Date: 2012-09-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of the uneconomical and difficult adjustment of the air cushion guide rail collision test device, the present invention uses a double pendulum device to verify the momentum conservation and kinetic energy conservation of the collision

Method used

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  • Experimental facility for proofing conservation of momentum and conservation of kinetic energy for collisions of double simple pendulums
  • Experimental facility for proofing conservation of momentum and conservation of kinetic energy for collisions of double simple pendulums

Examples

Experimental program
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Embodiment Construction

[0008] The graph paper 2 is vertically fixed on the iron panel of the support by a small magnet. The two pendulums are fixed in a rectangular slot on the top of the bracket 1, adjust the distance and height between the two pendulums so that the two pendulums touch each other when they are still; the base 4 has three level adjustment screws, adjust the base 4 level adjustment screws , make the cycloid of pendulum 3 parallel to coordinate paper 2.

[0009] Each pendulum 3 fixes a pen with a soft-haired nib. One pen is colored red and the other is blue. When the pendulum is at rest, the pen tip touches the graph paper and is perpendicular to the graph paper.

[0010] Pull up one of the pendulums and lower it from a high place, draw its motion curve with a color pen, when it collides with another pendulum, draw another pendulum’s motion curve with another color pen, after the collision is completed, when the pendulum returns to the bottom, let it go Single pendulum stops.

[001...

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Abstract

The invention discloses an experimental facility for proofing conservation of momentum and conservation of kinetic energy for collisions of double simple pendulums, relating to the field of confirmatory experiments of physical laws, in particular to confirmatory experiments for laws of conservation of momentum and conservation of kinetic energy for collision. During the physical experiments, an air track is used for proofing the conservation of momentum and the conservation of kinetic energy for collision, but the air track is hard to be adjusted for balance; a sliding block may easily fall on the ground; and an air pump is easy to break down. The technical scheme of the invention is as follows: a color pen is tied on each of the simple pendulum, the simple pendulum falling from heights with the potential energy gradually converting into the kinetic energy moves in an arc track, and the momentums and the kinetic energies before and after the collision are determined according to the positions before and after the collision and the highest positions where each simple pendulum can reach after the collision. The experimental facility for proofing the conservation of momentum and the conservation of kinetic energy for collisions of double simple pendulums disclosed by the invention has the following beneficial effects: the facility is simple and economic; the maintenance cost is low; and the experimental thoughts are clear.

Description

technical field [0001] The invention relates to the verification experiment field of physical laws, in particular to the verification experiment of the laws of momentum conservation and kinetic energy conservation of collisions. Background technique [0002] In the physical experiment, the momentum conservation and kinetic energy conservation of the collision are verified using the air-cushion guide rail. By observing the suspended objects swinging back and forth to judge whether the air-cushion guide rail is level. Larger force will cause the slider to fall to the ground, deforming the slider and making it unusable; the air pump is also prone to damage. The entire experimental setup is expensive and difficult to maintain. Contents of the invention [0003] In order to overcome the disadvantages of uneconomical and difficult adjustment of the air cushion guide rail collision test device, the present invention uses a double pendulum device to verify the momentum conservati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/10
Inventor 胡再国王维果邹旭敏
Owner SICHUAN UNIV
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